The Sunspot Observer - Average annual indices of solar activity NGDC - April, 1988

Statistics of sunspot activity

April, 1988

Visual indices of solar activity by National Geophysical Data Center

Date123456789101112131415161718192021222324252627282930Average%
W116.60100.6095.6780.8360.8371.5094.17106.20114.83106.00132.86150.57132.57146.17167.20149.71129.00142.33115.8096.5099.8078.5057.6743.8649.0046.8352.1745.4045.8360.0096.30100
Wn64.2054.8053.0045.1735.5042.3357.1771.2070.0064.8680.0094.7175.8671.1790.2080.7168.6794.8387.8069.5064.4048.3332.3318.576.710.004.830.000.002.7551.6553.64
Ws52.4045.8042.6735.6725.3329.1737.0035.0044.8341.1452.8655.8656.7175.0077.0069.0060.3347.5028.0027.0035.4030.1725.3325.2942.2946.8347.3345.4045.8357.2544.6546.36
n4.404.404.334.334.004.335.836.206.835.867.719.148.007.678.007.867.007.005.004.005.004.504.173.713.142.833.002.603.003.755.25100
A0.400.400.330.000.170.170.670.600.830.000.711.001.141.001.201.862.001.170.600.000.401.171.000.710.290.670.670.200.171.000.6813.02
B0.400.200.000.330.501.500.330.600.330.000.711.290.141.170.800.000.170.830.000.501.200.831.000.430.430.170.330.400.670.500.5310.00
C1.401.001.331.500.830.670.671.601.501.142.571.710.572.001.801.570.831.170.400.670.800.830.000.000.290.170.170.400.831.250.9918.83
D0.801.200.670.830.330.171.831.600.831.140.861.861.001.172.402.431.671.171.000.831.000.170.170.570.710.830.830.800.330.000.9718.53
E1.000.600.330.170.000.330.000.000.170.000.140.571.000.000.000.000.000.000.000.000.000.170.170.000.140.000.000.000.000.000.163.04
F0.000.200.670.170.170.000.000.000.670.570.430.140.570.670.800.710.670.831.000.830.600.330.000.000.000.000.170.000.000.000.346.47
G0.000.000.671.171.170.671.001.601.831.290.570.430.430.500.200.430.330.330.400.170.600.500.830.140.000.000.000.000.000.000.519.68
H0.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.170.170.200.000.000.000.330.000.290.000.000.000.000.000.040.73
I0.400.800.330.170.830.831.330.200.671.711.712.143.141.170.800.861.171.331.401.000.400.500.671.861.001.000.830.801.001.001.0419.71
x0.800.600.330.330.671.671.001.201.170.001.432.291.292.172.001.862.172.000.600.501.602.002.001.140.710.831.000.600.831.501.2123.02
r0.000.000.000.000.330.501.000.600.170.140.140.860.570.330.200.000.000.330.400.171.400.330.170.290.290.000.000.000.170.250.295.48
s1.602.202.331.501.331.171.831.803.003.144.143.713.713.172.402.862.172.171.801.170.801.171.002.291.571.331.501.201.171.752.0338.69
a1.201.201.332.001.500.831.672.202.332.291.431.861.861.832.602.001.671.331.001.170.400.330.330.000.290.500.330.400.830.251.2323.45
h0.600.200.000.000.000.000.170.400.170.000.000.140.140.170.200.290.000.170.400.330.600.330.330.000.000.170.000.400.000.000.173.30
k0.200.200.330.500.170.170.170.000.000.290.570.290.430.000.600.861.001.000.800.670.200.330.330.000.290.000.170.000.000.000.326.06
x0.801.200.670.171.001.002.000.801.501.712.433.144.292.172.002.713.332.672.201.000.801.672.002.571.571.671.501.001.172.001.7633.45
o2.402.002.333.672.832.833.504.404.333.003.574.001.573.675.003.572.332.500.601.332.801.832.001.140.860.170.831.201.671.252.4446.44
i1.001.201.330.500.170.500.331.001.001.141.712.002.141.831.001.571.331.832.201.671.401.000.170.000.711.000.670.400.170.501.0519.98
c0.200.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.010.13
CV85.4076.8081.0081.1756.0045.6783.33101.60111.33102.43104.86118.14119.5795.33121.20136.43110.00110.67107.6084.3379.8059.5056.8334.7143.1437.3339.8341.8025.1724.0079.17100
CVn30.8030.6052.3351.8329.8329.3349.5062.2065.0062.4372.5792.5780.1445.0058.8087.2972.8385.1787.0069.8367.8048.6735.6713.008.430.000.500.000.000.2546.3158.50
CVs54.6046.2028.6729.3326.1716.3333.8339.4046.3340.0032.2925.5739.4350.3362.4049.1437.1725.5020.6014.5012.0010.8321.1721.7134.7137.3339.3341.8025.1723.7532.8541.50